Science Nation

Engineers are 'schooling' themselves on fish maneuvers

Fish Maneuvers

From NSF  --  Their research is revealing more about what it takes to truly swim like a fish

With support from the National Science Foundation (NSF), aerospace engineer Michael Philen and his team at Virginia Tech are investigating the biomechanics of fish locomotion, in hopes of contributing to the next generation of robotic fish and underwater submersibles.

The researchers are studying how fish use their muscles to swim efficiently and execute underwater maneuvers, such as darting around in perfectly synchronized schools.

Changes in Greenland landscape affect carbon balance sheet

Warming is altering Greenland's tundra, affecting carbon dynamics

From the National Science Foundation - Warming temperatures in the Arctic are changing the tundra from a landscape dominated by grasses to one increasingly dominated by woody shrubs. In addition to affecting the habitat of local wildlife such as caribou and musk oxen, these changes are also altering the carbon exchange between the plants and the atmosphere.

Mathematician uses skills to study Greenland's retreating glaciers

New information about glacier melting will help fine tune climate models and improve predictions for sea level rise.

Many outlet glaciers in Greenland feed ice from the land into fjords, where discharge of icebergs and melting of the glaciers by warmer ocean waters contribute to rising sea levels.

David Holland of New York University (NYU) studies what happens in the fjord when ice meets water--how the dynamics at the margin between ice and sea are changing, and what those changes could mean in the future for global sea level rise.

Cactus "flesh" cleans up toxic water


From the National Science Foundation - A University of South Florida team are using the "flesh" from Prickly Pear cacti, called mucilage, to clean up oil and other toxins from water. The objectives of this research are to develop a water purification system based on an economically feasible method for low-income inhabitants of rural communities that are sensitive to existing economic, social and cultural patterns.